Joint for pavements or the like



Aug. 30, 1932. c. OLDER JOINT FOR PAVEMENTS OR THE LIKE Filed June 7, 1929 2 Sheets-Sheet l 2,2 Ka 20' Z4 Aug. 30,- 1932. r c. OLDER I r 1,874,589

JOINT FOR PAVEMENTS OR THE LIKE Filed June 7 1929 2 Sheets-Sheet 2 Patented Aug. 30, 1932 PATENT OFFICE CLIFFORD OLDER, OF WILMETTE, ILLINOIS JOINT FOR PAVEMENTS OR THE LIKE Application filed June 7,

The present invention relates to concrete pavements and they like, and is particularly concerned with devices for forming joints or dividing the pavement into a plurality of sections.

In the construction of concrete pavements, sidewalks, floors, and other monolithic structures which are molded in place, it is highly desirable to divide the pavement into sections of definite, predetermined dimensions in order to eliminate unsightly,irregular cracks, and to provide separation joints of such nature that the cracks may open or close as the adjacent concrete sections contract or expand. In the pavement joints of the prior art, the parting members have not been provided with aligning devices having substantially parallel guiding surfaces, and when the adjacent sections of concrete contract,

there is a tendency for one section to settle relative to the other, and the devices used in the prior art have not been capable of eliminating the settling of one section of the pavement relative to the other sections.

Considerable difficulty is also experienced in locating the parting members of the prior art, due to the fact that they have usually been supportedupon stakes which must be driven exactly at the point where the parting member is to be located, and when stony ground is encountered at this point, it is practically impossible to'adequately support the parting member with the devices of the prior art.

One of the objects of the invention is the elimination of the foregoing difficulties, and others, by the provision of an improved form of joint construction for pavements or the like.

Another object is the provision of an improved mode of support for parting strips for concrete pavement sections, whereby the parting strips may be firmly supported in proper position by driven members, without trouble in stony ground where stones may be encountered at the division line between sections of pavement.

Another object is the provision of an improved parting strip assembly, in which the parting strip is movably carried by its sup- 1929. Serial No. 369,020.

port, so that the strip may be more easily located in the desired position.

Another object is the provision of an improved parting-strip construction which is adapted to divide the pavement into sections, and to slidably support each section of the pavement in aligned position with the adjacent section, to positively prevent any settling of one section relative to the others.

Another object is the provision of a simplified construction for parting strips, which is capable of performing the foregoing results, and which is more economically manufactured and installed than the devices of the prior art.

Other objects and advantages of the invention will be apparent from the following description and from the accompanying drawings, in which similar characters of reference indicate similar parts throughout the several views.

Referring to the drawings, of which there are two sheets;

Fig. 1 is a plan view of a joint between two pavement sections, with the pavement partially broken away to show the parting strip structure and more of support for the same;

Fig. 2 is a sectional view taken on the plane of the line 2-2 of Fig. 1, of an extremely simple parting strip structure;

Fig. 3 is a similar view showing a modified form of parting strip and aligning member;

Fig. 4 is a side elevational view of the structure shown in Fig. 3, in partial section on the plane of the line 44 of Fig. 3;

Fig. 5 is a view similar to Fig. 2, of another modified joint construction;

Fig. 6 is a view similar to Fig. 3, of another modified joint construction;

Fig. 7 is a similar view of another modification;

Fig. 8 is a view in perspective of one of the securing devices of Figs. 6 and 7 for holding the parting strip on its supports;

F ig. 9 is a view similar to Fig. 3, of a modified form of parting strip and securing device;

Fig. 10 is an end view of the device of Fig. 9, in partial section, onthe plane of the line l010 of Fig. 9.

Referring to Figs. 1 and 2, 20 and 21 indicate adjacent sections of concrete pavement or the like having abutting edges 22 and 23. The crack 24 between the edges 22 and 23 may be formed partly by the use of trowels or other tools if desired, but ordinarily the plane of weakness in the pavement which is formed by the parting member 25, is such that the crack 24 appears above and below the parting member 25 when the cencrete has contracted.

In the embodiment shown in Figs. 1 and 2, the parting member 25 comprises an elongated strip of sheetnietal which is provided with a longitudinally extending, laterally projecting flange 26 adapted to perform the function of aligning the adjacent sections-2O and 21 of the pavement. The flange 26 has its upper and lower surfaces substantially parallel, forming a recess in one of the sections 21 with complementary guidingsur faces, and the guiding member 26 is thereby slidably supported in the section 21 and adapted to prevent any settling of one section of the pavement relative to the other section.

In order to provide a mode of support upon which the parting members of any of the present constructions may be adj ustably sup ported, I preferto employ double point-ed members 27 which may be of substantially U-shape, having an elongated upper portion 28 and a pair of points 29 and 30. The parting members 25 may besecured on the supporting member 27 by'securing members 31, which are capable of permitting some pivotal movement between the supporting member 27 and the parting strip 25 in a horizontal plane. j

Thus it will be observed in Fig. 1 that there are a multiplicity of positions 32, 33,

34, in which the double pointed supporting members 27 may be located in order to select places in stony soil where the points may be most firmly driven. However, the elongated supporting portion 28 of the supporting members 27 is adapted to support the parting members 25 in any of these positions, and the double pointed members may be very quickly driven without the trouble which is encountered when sticks must be located at any definite point in order to locate the parting strip at the point desired.

In the embodiment shown in Figs. 2, 3 and 4, the securing devices 31 comprise sheet metal members which are formed with a centrally located slot 35 adapted to receive a -parting member 25 and having resilient clamping fingers 36 and 37 for engaging both sides of the supporting member 27 and securing the parting strip in place.

Thus the securing device of Figs. 2 to 4 is provided with a pair of substantially U-shaped parts 38 and 39, each comprising a pair of depending walls 40 and 41 which terminate in the fingers 36 or 37. The depending walls 40 and 41 are joined by upwardly sloping flanges 42, 43, which are also joined by a yoke 44 above the parting member 25.

The depending walls 40 and 41 are cut away at 45, 46 to makeadditional room for the parting strip and other structures which are to be secured on the double pointed members 27, also forming the separate resilient fingers 36 and 37.

Referring to Fig. 4, it will be noted that the resilient fingers 36 which may be regarded as exemplary of the resilient clamping devices employed, are provided with outwardly bent guiding flanges 47 capable of camming the fingers apart to receive the supporting member 27 The resilient fingers 36 are also so formed that when the supporting member 27 is between the fingers 36, and the parting strip is also in position in the slot 35, the fingers 36 are in firm engagement with the double pointed member 27. The relative proportions of the securing devices 31 and the clamping'fingers of each device will vary according to the type of parting member used with each securing device.

The parting member 25 of Fig. 2 may then be secured in place by simply driving a plurality of double pointed supporting members 27 in the most convenient position, placing the parting member 25 thereon at the desired point, the flange 26 serving as a support and securing the parting member by a plurality of securing devices 31 which clamp the parting strip .on the U-shaped supporting members. The parting strip may be slid longitudinally of the supporting rods 27 if neces sary to secure the proper adjustment, and if the supporting rods 27 are not disposed directly at right angles, sliding motion will take place between the parting strip and the securlng device 31 during this adjustment, but the parting strip may be located wherever desired without any difficulties being caused by stony ground.

In the embodiment of Fig. 5, the parting member 25 comprises an elongated sheet metal member having an upper parting flange'48, a lower parting flange 49 and an intermediate transverse longitudinally extending rib 50. In this embodiment the rib 50 comprises flanges, one of which is bent back upon the other, forming an aligning member similar to that provided in Fig. 2, but capable of providing a support for the lower parting flange 49.

The lower parting flange 49 is formed with slots 51 located wherever it is desired to place the supporting members 27 The securing device 52 of this embodiment is illustrated in detail in Fig. 8, and comprises a sheet metal member which may be provided with a body 53, upwardly extending reinforcing flanges 54 and downwardly extending clamping fingers 55. The clamping fingers are provided with camming portions 47 as in the previous embodiment, and the fingers 55 are of such proportions and shape that the rod 27 is clamped thereby when the parts are in the position shown in Fig. 5, and the body 53 engages the rib 50 on the parting strip.

Referring to Fig. 6, in this modified construction the parting member 25 comprises an upper portion 56 having a laterally projecting, longitudinally extending flange 57, and the parting strip includes a lower parting member 58 having a similariaterally projecting flange 59. The flanges 57 and 59 may be spot welded or otherwise secured to an aligning member 60 comprising a steel plate having substantially parallel upper and lower guiding surfaces 61 and 62. The lower parting flange 58 is likewise provided with slots 63 to receive the double pointed rods 27 and the body 53 of the securing member 52 may be cut away as at 64 to provide a recess for the flange 57 on the parting member. In this embodiment, the aligning member 60 preferably comprises a steel plate which projects into each of the adjacent concrete sections 20 and 21 and slidably engages the complementary walls of the recess formed in the pavement sections.

Referring to Fig. 7, the parting strip in this embodiment is substantially similar in form to that of Fig. 6, having the same flanges 56, 57, 58 and 59, but the flanges 57 and 58 are joined. by a longitudinally extending portion 65 forming an integral rib 66, forming a recess 67 in the parting member 25, which is capable of receiving the metal plate 60. The plate 60 need not be secured to the parting strip by spot welding or other devices in this embodiment, and the recess 67 provides a metal linedrecess in one of the concrete sections, in which the plate 60 may be slidably received to permit expansion or contraction of the adjacent concrete 1 sections, without possibility of the recess being filled by sand particles or other parts which are worn off from the concrete pavement inside the recess. Since the opposite or right hand edge of the plate 60 is not necessarily secured, the plate may also slide in the other section if necessary.

Referring to Fig. 9, the modified construction here illustrated comprisesa parting strip 25 which may be of substantially the same form as that shown in Fig.7, having a similar metal plate or aligning member 60 which is, however, of less width. depending upon 69 and 70 are provided with slots 7 4 extending in the same general direction as the slot Z1 to form pairs of resilient fingers and The resilient fingers 75 and 76 are bent in opposite directions relative to the body of the flanges 69 and 70, forming clamping fins gers having camming surfaces 47 as previously described and appropriately shaped to clamp the rod 27 when the parts are in the position of Figs. 9 and 10.

It will thus be observed that in each of the foregoing embodiments, the parting strip may be detachably secured to the double pointed supporting members by means ofsecuring devices which may be applied without the use of any tools, and consequently the parting strip may be installed with a minimum expenditure of labor and time. As the double pointed members may be located in any convenient position, the present construction eliminates the difficulties which were encountered by the prior devices when installed in stony ground, and the present parting strips are not only adapted to produce joints at the points desired, but they are adapted to slidably support each pavement section relative to the adjacent pavement section, so that the present device will maintain the pavement in properly aligned condition While permitting the inevitable expansion and contraction.

While I have illustrated a preferred embodiment of my invention, many modifications may be made Without departing from the spirit 'of the invention, and I do not wish to be limited to the precise details of construction set forth, but desire to avail myself of all changes within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. A joint construction for concrete pavement or the like, comprising a pair of pavement sections having adjacent edges, a metal member having parallel guiding surfaces carried by said sections at their adjacent edges and slidably mounted relative to one of said sections, a parting member extending transversely to said metal member to form said pavement in-sections, and a plurality of supports for movably supporting said members.

2. A joint construction for concrete pavement or the like, comprising a pair of pavement sections having adjacent edges, a metal member having parallel guiding surfaces carried by said sections at their adjacent edges and slidably mounted relative to one of said sections, a parting member extending transversely to said metal member to form said pavement in sections, and a plurality of supports for movably supporting said members, said supports comprising driven members having elongated supporting surfaces.

pavement in sections, a plurality of supportsv for movably supporting said members, said supports comprising driven members having elongated supporting surfaces, and resilient clamping members for removably mounting said members on said supports.

4:. In a pavement joint device, the combination of a double pointed: member capable of being driven in any of a multiplicity of positions, with a parting strip adjustably carried by said double pointed member, to form a' pavement in sections, said parting strip having a longitudinally extending rib and an aligning plate slidably mounted in a recess formed by said rib.

5. In a pavement oint device, the combination of a double pointed member capable of being driven in any of a multiplicity of positions with a parting stripadjustably carried by said double pointed member, to form a pavement in sections, said parting strip having a longitudinally extending rib, an aligning plate slidably mounted in a recess formed by said rib, and a fastening member for said parting member, comprising a sheet metal member having a recess to receive said parting member, and resilient fingers on each side of said recess for engaging said double pointed member.

6. A parting strip for pavement sections or the like, comprising an elongated sheet metal member, having an upper parting flange, a lower parting flange and an intermediate rib, said rib having parallel walls forming a recess for a horizontally disposed aligning member, and a flat metal plate slidably engaged between the walls of said rib and projecting therefrom to engage in an adjacent section of pavement,

7. A parting strip for pavement sections or the like, comprising an elongated sheet metal member, having an upper parting flange, a lower parting flange and an intermediate rib, said rib having parallel walls forming a recess for a horizontally disposed aligning member, a flat metal plate slidably engaged between the walls of said rib and projecting therefrom to engage in an adjacent section of pavement, and a plurality of horizontally extending driven members for adjustably supporting said parting strip.

8. A parting strip for pavement sections or the like, comprising an elongated sheet metal member, having an upper parting flange, a lower parting flange and an intermediate rib, said rib having parallel Walls forming a recess for a horizontally disposed aligning member, a fiat metal plate slidably engaged between the walls of said rib and projecting therefrom to engage in an adjacent section of pavement, a plurality of horizontally extending driven members for adj ustably supporting said parting strip, and resilient clamps engaging said driven members and said parting strip to hold said strip in adjusted position.

9. A parting strip for pavement sections or the like, comprising an elongated sheet metal member, having an upper parting flange, a lower parting flange and an intermediate rib, said rib having parallel walls forming a recess for a horizontally disposed aligning member, a flat metal plate slidably engaged between the walls of said rib and projecting therefrom to engage in an adjacent section of pavement, a plurality of horizontally extending driven members for adjustably supporting said parting strip, and resilient clamps engaging said driven members and said parting strip to hold said strip in adjusted position, comprising a metal mem ber formed with a yoke embracing the top of said parting strip, and clamping fingers on each side of said parting strip.

10. A parting strip arrangement for concrete, comprising a pointed rod having a horizontally bent portion, a parting strip supported by said rod in a vertical plane, and a clamping member having clamping fingers for engaging the horizontal portion of said rod and having surfaces for engaging the sides of said parting strip and supporting the same in a vertical plane, said parting strip comprising a pair of vertically extending flanges separated by a rib formed of a pair of ,folded, horizontally extending flanges, said horizontally extending flanges being spaced from each other to receive a flat plate adapted to project into the adjacent concrete sections to maintain said sections in alignment.

11. A parting strip arrangement for concrete, comprising a pointed rod having a horizontally bent portion, a parting strip supported by said rod in a vertical plane, and a clamping member having clamping fingers for engaging the horizontal portion of said rod and having surfaces for engaging the sides of said parting strip and supporting the same in a vertical plane, said parting strip comprising a horizontally extending flat metal plate and vertically extending metal members located on both sides of said horizontal plate and provided with horizontal fianges secured to said plate.

In witness whereof, I hereunto subscribe my name this 3 day of June, 1929.

CLIFFORD OLDER. 

